Improved hand drilling-machine



dritti @Statler abad dimite,

Letters Patent No. 101,466, dated April 5, 1870.

IMPROVED HAND DRILLINGMACHINB.

*Omo- The Schedule referred to in these Letters Patent and making part of the same To all Iwhom it may concern Be it known that I, JAMES E. HUNTER, of North Adams, in the county of Berkshire and State of Massachusetts, have invented a new and useful Improvemeut in Hand Drilling-Machines; land I do hereby declare that the following is. a full, clear, and exact description thereof, which will enable others skilled in the art to make and use thesame, reference being had to the accompanying drawing forming part of this specification.

This invention relates to hand drilling-machines, and) consists in the construction and arrangement of certain parts, (speciiied in the c1aim,) whereby the drill-spindle may be adjusted in a horizontal and vertical plane, as hereinafter specified.

In the accompanying drawing- Figure 1 represents a side view ofthe machine, showing the boring-drill standing parallel with the clamping-screw.

Figure 2 is a view of the machine showing the drill at au angle with the clamping-screw.

Figure 3 is a detached View ofthe crank and ratchet.

Similar letters of reference indicate corresponding parts. v

A A represent the jaws of the clamp.

B is the clamp-adj ustin g screw.

C is the fastening-screw of the jaw.

I) is a slotted arm, which is adjustable on the end of the screw B, where it is fastened by means ofthe screw E.

F is the drill-head.

G is a. disk on the end of the arm I).

The head F is adjustable on the disk G, and is fastened by the central screw H, so that the drill I may be turned at di'ercnt angles to the clamping-screw B.

J is the feed-screw through the head F, which is turned 'by the handle K. This feed-screwis tubular, with the drill-spindle working through it in the ordinary manner.

L is a ratchet-wheel, which is'fast on the drillspindle.

By this machine a hole may be drilled in almost' any place or position, the combined motions adapting it to all the various purposes for which hand drillingmachines are used.

Having thus described my invention,

I claim as new 'and desire to secure by Letters Patent.- l

The slotted arm D, provided with the disk G, in combination with the head F, screw H, feed-screw J, clamp-screws B and E, the handle M ratchet L, and pawl N, substantially as and for the purpose specified.

JAS. E. HUNTER.

IVitiiesses:

H. W. N. COLE, J as. G. TAYLOR, Jr. 

